Symfony sfGuardAuth Functional Testing

sfGuardTestFunctional class under /lib

class sfGuardTestFunctional extends sfTestFunctional
{
    public function signin($username, $password)
    {
        return $this->
            info(sprintf('Signin user using username "%s" and password "%s"', $username, $password))->
            click('Signin', array('signin' => array('username' => $username, 'password'=>$password)))
            //with('form')->debug()->
            ;
    }
}

the test file is

<?php

include(dirname(__FILE__).'/http://www.cnblogs.com/bootstrap/functional.php');

$browser = new sfGuardTestFunctional(new sfBrowser());

$username = 'xming';
$password = 'xming';

$browser->
      get('/login')->
      info('Culture :'.$browser->getUser()->getCulture())->
      with('request')->begin()->
        isParameter('module', 'sfGuardAuth')->
        isParameter('action', 'signin')->
      end()->
  
      get('/login')->
      with('response')->begin()->
        isStatusCode(401)->
      end()->
      signin($username, $password)->
      with('response')->begin()->
          checkElement('ul.error_list', false)->
          isStatusCode(302)->
        isRedirected()->
        info("status code :".$browser->getResponse()->getStatusCode())->
      end()->
      
      get('/login')->
      with('response')->begin()->
        isStatusCode(302)->
      end()
;